4.8 Viewing Motor Measurement Values (Model PW3390-03 only)
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4
Chapter 4 Viewing Measurement Values
To calculate motor slip, select a reference source for measuring the motor input frequency.
See "4.2.4 Frequency Measurement Settings" (p. 58)
Select the type of input signal from the torque sensor connected to CH A.
CHA input
Available setting items depend on the state of the following settings.
Selecting the Input Frequency Reference Source
f1, f2, f3, f4
Slip Calculation Formula
CH B Measurement Units Calculation Formula
When [Hz]
100 ×
When [r/min]
100 ×
Input Frequency - |CH B Display Value|
Input Frequency
2 × 60 × Input Frequency - |CH B Display Value| × Set No. of Poles
2 × 60 × Input Frequency
• To calculate slip, set CH B to suit the rotation input signal.
• As the input frequency, select the most stable signal from the voltage and current supplied to
the motor.
Setting Torque Input (CH A)
AnalogDC When the sensor outputs a DC voltage proportional to the torque
Freq When the sensor outputs a frequency proportional to the torque
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